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EasyCardiologyHeart Failure-MRA Useus-abimus-usmle-step-2us-usmle-step-3

A 59-year-old with HFrEF (EF 25%) on metoprolol succinate and sacubitril/valsartan remains symptomatic. K⁺ 4.7 mEq/L, eGFR 65. Which addition improves outcomes?

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